Could you please describe your application: {_T?0L 1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... "i0{E!,XL 2, is the fiber single mode or multimode? what is the NA, core dia,... V<:scLm#OF OZ##x Generally, fiber coupling efficiency of 40%~90% is reasonable. k|Mj|pqA l&}3M Again let us know your specific bug. *gF8"0s *{[jO&&J MANG2004 Xy/lsaVskX